JERRY MASON / SCIENCE PHOTO LIBRARY JERRY MASON / SCIENCE PHOTO LIBRARY
Data storage hardware. View of several forms of computer data storage disk drives. They are, from top to bottom: a zip drive, an external hard disk, a CD-ROM player, a SyQuest removable drive and the CPU (central processing unit), with a removable floppy disk (black) popped out of the drive. There is a modem to the left of the CD-ROM drive. Modems are devices for connecting computers through existing telephone lines. The data storage drives seen here all act as extra memory for the computer. The CD-ROM (compact disc read-only memory) is the only one of these in which the data cannot be altered. The other drives can have new data written onto them by the user.
Model release not required. Property release not required.